Add support for displaying emojis

README.md

@@ -25,14 +25,23 @@ seperated card aliases, e.g. `-d Tc 2c` for 10♣️ (Ten of Clubs) and 2♣️
 
 ```
 ./joker -h
-Usage: joker [-hV] [-b=<card>]... [-d=<card>]... (<card> <card>)...
+Usage: joker [-ehV] [-b=<card>]... [-d=<card>]... (<card> <card>)...
       (<card> <card>)...   Player cards (2 cards per player, 2 to 10 players).
   -b, --board=<card>       Board cards - flop, turn or river (3 to 5 cards).
   -d, --dead=<card>        Cards that are no longer in the deck (1 to 19 cards).
+  -e, --emoji              Display emojis for suits instead of letters.
   -h, --help               Show this help message and exit.
   -V, --version            Print version information and exit.
 ```
 
+Also, you can use the `-e` flag to display emojis for suits instead of letters.
+```
+./joker Jh 9s Ac 2d --emoji
+        Win     Tie
+J♥️9♠️:  43,82%   0,43%
+A♣️2♦️:  55,75%   0,43%
+```
+
 ## Examples
 
 Player 1 has A♥️ (Ace of Hearts) and K️♥️ (King of Hearts),  

src/main/java/cz/matfyz/rudad/joker/calculator/Calculator.java

@@ -114,6 +114,9 @@ public static void main(String[] args) {
                 calculatorArgs.getCommandLine().printVersionHelp(System.out);
                 return;
             }
+            // Set whether to print emojis for suits or not
+            Card.setPrintSuitEmojis(calculatorArgs.shouldPrintEmojis());
+
             Calculator calculator = new Calculator(calculatorArgs);
             calculator.calculate().printOdds();
         } catch (CommandLine.PicocliException | IllegalArgumentException e) {

src/main/java/cz/matfyz/rudad/joker/calculator/CalculatorArgs.java

@@ -47,6 +47,12 @@ class CalculatorArgs {
     )
     private final List<Card> deadCards = new ArrayList<>();
 
+    @Option(
+            names = {"-e", "--emoji"},
+            description = "Display emojis for suits instead of letters."
+    )
+    private boolean printEmojis;
+
     private final CommandLine commandLine = new CommandLine(this);
 
     /**
@@ -98,6 +104,15 @@ List<Card> getDeadCards() {
         return deadCards;
     }
 
+    /**
+     * Returns whether emojis should be printed instead of letters.
+     *
+     * @return true if emojis should be printed, false otherwise
+     */
+    boolean shouldPrintEmojis() {
+        return printEmojis;
+    }
+
     /**
      * Returns the underlying CommandLine object for advanced usage.
      *

src/main/java/cz/matfyz/rudad/joker/card/Card.java

@@ -14,6 +14,8 @@ public class Card implements AutoCloseable {
     private final Suit suit;
     private final int cardId;
 
+    private static boolean printSuitEmojis = false;
+
     /**
      * Constructs a Card instance with the given card ID.
      *
@@ -130,14 +132,32 @@ public int getCardId() {
         return cardId;
     }
 
+    /**
+     * Returns if the suit emoji should be printed.
+     *
+     * @return {@code true} if the suit emoji should be printed, {@code false} otherwise
+     */
+    public static boolean isPrintSuitEmojis() {
+        return printSuitEmojis;
+    }
+
+    /**
+     * Sets if the suit emoji should be printed.
+     *
+     * @param printSuitEmojis {@code true} if the suit emoji should be printed, {@code false} otherwise
+     */
+    public static void setPrintSuitEmojis(boolean printSuitEmojis) {
+        Card.printSuitEmojis = printSuitEmojis;
+    }
+
     /**
      * Returns the string representation of the card.
      *
      * @return the string representation
      */
     @Override
     public String toString() {
-        return rank.toString() + suit;
+        return rank.toString() + (printSuitEmojis ? suit.emoji() : suit);
     }
 
 }

src/main/java/cz/matfyz/rudad/joker/card/Suit.java

@@ -19,6 +19,13 @@ public enum Suit {
             SuitAlias.SPADES, SPADES
     );
 
+    private static final Map<Character, String> emojiMap = Map.of(
+            SuitAlias.CLUBS, SuitEmoji.CLUBS,
+            SuitAlias.DIAMONDS, SuitEmoji.DIAMONDS,
+            SuitAlias.HEARTS, SuitEmoji.HEARTS,
+            SuitAlias.SPADES, SuitEmoji.SPADES
+    );
+
     private final char alias;
 
     /**
@@ -75,6 +82,15 @@ public char getAlias() {
     public String toString() {
         return String.valueOf(alias);
     }
+
+    /**
+     * Returns the emoji representation of the suit.
+     *
+     * @return the emoji representation
+     */
+    public String emoji() {
+        return String.valueOf(emojiMap.get(alias));
+    }
 }
 
 /**
@@ -86,3 +102,13 @@ class SuitAlias {
     static final char HEARTS = 'h';
     static final char SPADES = 's';
 }
+
+/**
+ * Contains emojis for the suits.
+ */
+class SuitEmoji {
+    static final String CLUBS = "♣️";
+    static final String DIAMONDS = "♦️";
+    static final String HEARTS = "♥️";
+    static final String SPADES = "♠️";
+}